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  <a name="EN-US_TOPIC_0000001792344002"></a><a name="EN-US_TOPIC_0000001792344002"></a>
  <h1 class="topictitle1">Restoring Cloud Disks</h1>
  <div>
   <p>This section describes how to restore a cloud server or cloud disk to the original or a new location after the cloud server has been backed up, when the cloud server disks are damaged.</p>
   <div class="section">
    <h4 class="sectiontitle">Context</h4>
    <p>The <span>product</span> allows you to restore cloud disks to the original or a new location using backup copies or replication copies (data cannot be restored to the original cloud server using replication copies).</p>
    <ul>
     <li>Restoration to the original location<p>Restore data to cloud server disks on the current cloud platform, including existing disks and new disks.</p></li>
     <li>Restoration to a new location<p>Restore data to existing disks of another cloud server.</p></li>
    </ul>
   </div>
   <div class="section">
    <h4 class="sectiontitle">Precautions</h4>
    <p>A maximum of 24 disks can be mounted to an agent host. Therefore, if 24 disks have been mounted to an agent host during backup and restoration, the system performs the restoration job when there are idle slots.</p>
   </div>
   <div class="section">
    <h4 class="sectiontitle">Procedure</h4>
    <ol>
     <li><span>Choose <span class="uicontrol" id="EN-US_TOPIC_0000001792344002__en-us_topic_0000001839143089_en-us_topic_0000001839142377_uicontrol1717665184916"><b><span id="EN-US_TOPIC_0000001792344002__en-us_topic_0000001839143089_en-us_topic_0000001839142377_text61762584912"><strong>Explore</strong></span> &gt; <span id="EN-US_TOPIC_0000001792344002__en-us_topic_0000001839143089_en-us_topic_0000001839142377_text101769504917"><strong>Copy Data</strong></span> &gt; <span id="EN-US_TOPIC_0000001792344002__en-us_topic_0000001839143089_en-us_topic_0000001839142377_text368193113219"><strong>Cloud Platforms</strong></span> &gt; OpenStack</b></span>.</span></li>
     <li><span>Search for copies by resource or copy. This section describes how to search for copies by resource.</span><p></p><p>On the <strong>Resources</strong> tab page, locate the cloud server to be restored by cloud server name and click the name.</p> <p></p></li>
     <li><span>On the <span class="uicontrol"><b><span>Copy Data</span></b></span> page, select the year, month, and day in sequence to locate the copy.</span><p></p><p>If <span><img src="en-us_image_0000001792344042.png"></span> is displayed below a month or day, a copy is generated in the month or on the day.</p> <p></p></li>
     <li><span>Find the copy to be restored and choose <span><strong>More</strong></span> &gt; <span><strong>Disk Restoration</strong></span> on the right.</span></li>
     <li><span>Select the cloud disk to be restored and configure the restoration.</span></li>
     <li><span>Restore data to the original location or a new location.</span><p></p>
      <ul>
       <li>Restoration to the original location<p><a href="#EN-US_TOPIC_0000001792344002__table52750616234">Table 1</a> describes the related parameters.</p>
        <div class="tablenoborder">
         <a name="EN-US_TOPIC_0000001792344002__table52750616234"></a><a name="table52750616234"></a>
         <table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0000001792344002__table52750616234" frame="border" border="1" rules="all">
          <caption>
           <b>Table 1 </b>Parameters for restoring data to the original location
          </caption>
          <colgroup>
           <col style="width:29.87%">
           <col style="width:70.13000000000001%">
          </colgroup>
          <thead align="left">
           <tr>
            <th align="left" class="cellrowborder" valign="top" width="29.87%" id="mcps1.3.4.2.6.2.1.1.2.2.3.1.1"><p>Parameter</p></th>
            <th align="left" class="cellrowborder" valign="top" width="70.13000000000001%" id="mcps1.3.4.2.6.2.1.1.2.2.3.1.2"><p>Description</p></th>
           </tr>
          </thead>
          <tbody>
           <tr>
            <td class="cellrowborder" valign="top" width="29.87%" headers="mcps1.3.4.2.6.2.1.1.2.2.3.1.1 "><p><span><strong>Type</strong></span></p></td>
            <td class="cellrowborder" valign="top" width="70.13000000000001%" headers="mcps1.3.4.2.6.2.1.1.2.2.3.1.2 "><p>Select the type of the disk to be restored. You can select <strong>Existing Disks</strong> or <strong>New Disks</strong>.</p></td>
           </tr>
           <tr>
            <td class="cellrowborder" valign="top" width="29.87%" headers="mcps1.3.4.2.6.2.1.1.2.2.3.1.1 "><p><span><strong>Target Disk Location</strong></span></p></td>
            <td class="cellrowborder" valign="top" width="70.13000000000001%" headers="mcps1.3.4.2.6.2.1.1.2.2.3.1.2 "><p>Select the name and type of the disk to be restored.</p>
             <div class="note">
              <span class="notetitle"> NOTE: </span>
              <div class="notebody">
               <p id="EN-US_TOPIC_0000001792344002__en-us_topic_0000001792343994_p1486181812212">Disk creation may fail because the selected disk type is different from the original one. Exercise caution when performing this operation.</p>
              </div>
             </div></td>
           </tr>
           <tr>
            <td class="cellrowborder" valign="top" width="29.87%" headers="mcps1.3.4.2.6.2.1.1.2.2.3.1.1 "><p><span><strong>Agent Host</strong></span></p></td>
            <td class="cellrowborder" valign="top" width="70.13000000000001%" headers="mcps1.3.4.2.6.2.1.1.2.2.3.1.2 "><p>Select an agent host used for copy restoration.</p> <p>If the agent host is not selected, the system performs restoration by selecting one or multiple agent hosts from the agent hosts configured during resource registration.</p></td>
           </tr>
           <tr>
            <td class="cellrowborder" valign="top" width="29.87%" headers="mcps1.3.4.2.6.2.1.1.2.2.3.1.1 "><p><span><strong>Power on Automatically After Restoration</strong></span></p></td>
            <td class="cellrowborder" valign="top" width="70.13000000000001%" headers="mcps1.3.4.2.6.2.1.1.2.2.3.1.2 "><p>If this option is enabled, the cloud server automatically starts after the restoration is complete. This option is disabled by default.</p></td>
           </tr>
           <tr>
            <td class="cellrowborder" valign="top" width="29.87%" headers="mcps1.3.4.2.6.2.1.1.2.2.3.1.1 "><p><span><strong>Copy Verification Before Restoration</strong></span></p></td>
            <td class="cellrowborder" valign="top" width="70.13000000000001%" headers="mcps1.3.4.2.6.2.1.1.2.2.3.1.2 "><p>If this option is enabled, the integrity of a copy is verified before the copy is used for restoration. This operation affects the restoration performance. This option is disabled by default. This function cannot be enabled when the copy verification status is <strong>Invalid</strong> or <strong>--</strong>.</p></td>
           </tr>
          </tbody>
         </table>
        </div></li>
       <li>Restoration to a new location
        <div class="p">
         <a href="#EN-US_TOPIC_0000001792344002__table15668141795417">Table 2</a> describes the related parameters. 
         <div class="tablenoborder">
          <a name="EN-US_TOPIC_0000001792344002__table15668141795417"></a><a name="table15668141795417"></a>
          <table cellpadding="4" cellspacing="0" summary="" id="EN-US_TOPIC_0000001792344002__table15668141795417" frame="border" border="1" rules="all">
           <caption>
            <b>Table 2 </b>Parameters for restoring data to a new location
           </caption>
           <colgroup>
            <col style="width:29.87%">
            <col style="width:70.13000000000001%">
           </colgroup>
           <thead align="left">
            <tr>
             <th align="left" class="cellrowborder" valign="top" width="29.87%" id="mcps1.3.4.2.6.2.1.2.1.2.2.3.1.1"><p>Parameter</p></th>
             <th align="left" class="cellrowborder" valign="top" width="70.13000000000001%" id="mcps1.3.4.2.6.2.1.2.1.2.2.3.1.2"><p>Description</p></th>
            </tr>
           </thead>
           <tbody>
            <tr>
             <td class="cellrowborder" valign="top" width="29.87%" headers="mcps1.3.4.2.6.2.1.2.1.2.2.3.1.1 "><p><span><strong>Target Location</strong></span></p></td>
             <td class="cellrowborder" valign="top" width="70.13000000000001%" headers="mcps1.3.4.2.6.2.1.2.1.2.2.3.1.2 "><p>Select the cloud server to which the backup copy is restored.</p></td>
            </tr>
            <tr>
             <td class="cellrowborder" valign="top" width="29.87%" headers="mcps1.3.4.2.6.2.1.2.1.2.2.3.1.1 "><p><span><strong>Type</strong></span></p></td>
             <td class="cellrowborder" valign="top" width="70.13000000000001%" headers="mcps1.3.4.2.6.2.1.2.1.2.2.3.1.2 "><p>Select the type of the disk to be restored. You can select <strong>Existing Disks</strong> or <strong>New Disks</strong>.</p></td>
            </tr>
            <tr>
             <td class="cellrowborder" valign="top" width="29.87%" headers="mcps1.3.4.2.6.2.1.2.1.2.2.3.1.1 "><p><span><strong>Target Disk Location</strong></span></p></td>
             <td class="cellrowborder" valign="top" width="70.13000000000001%" headers="mcps1.3.4.2.6.2.1.2.1.2.2.3.1.2 "><p>Select the name and type of the disk to be restored.</p></td>
            </tr>
            <tr>
             <td class="cellrowborder" valign="top" width="29.87%" headers="mcps1.3.4.2.6.2.1.2.1.2.2.3.1.1 "><p><span><strong>Agent Host</strong></span></p></td>
             <td class="cellrowborder" valign="top" width="70.13000000000001%" headers="mcps1.3.4.2.6.2.1.2.1.2.2.3.1.2 "><p>Select an agent host used for copy restoration.</p></td>
            </tr>
            <tr>
             <td class="cellrowborder" valign="top" width="29.87%" headers="mcps1.3.4.2.6.2.1.2.1.2.2.3.1.1 "><p><span><strong>Power on Automatically After Restoration</strong></span></p></td>
             <td class="cellrowborder" valign="top" width="70.13000000000001%" headers="mcps1.3.4.2.6.2.1.2.1.2.2.3.1.2 "><p>If this option is enabled, the cloud server automatically starts after the restoration is complete. This option is disabled by default.</p></td>
            </tr>
            <tr>
             <td class="cellrowborder" valign="top" width="29.87%" headers="mcps1.3.4.2.6.2.1.2.1.2.2.3.1.1 "><p><span><strong>Copy Verification Before Restoration</strong></span></p></td>
             <td class="cellrowborder" valign="top" width="70.13000000000001%" headers="mcps1.3.4.2.6.2.1.2.1.2.2.3.1.2 "><p>If this option is enabled, the integrity of a copy is verified before the copy is used for restoration. This operation affects the restoration performance. This option is disabled by default. If no copy verification file is generated, this option cannot be enabled.</p></td>
            </tr>
           </tbody>
          </table>
         </div>
        </div></li>
      </ul> <p></p></li>
     <li><span>Click <span class="uicontrol"><b>OK</b></span>.</span></li>
     <li><span>Select a target cloud disk for each cloud disk to be restored.</span><p></p>
      <div class="note">
       <img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span>
       <div class="notebody">
        <ul>
         <li>Data on data disks cannot be restored to the system disk, but data on the system disk can be restored to data disks.</li>
         <li>The restoration can be successful only when the target cloud disk is in the mounting state and its capacity is greater than or equal to that of the cloud disk to be restored.</li>
        </ul>
       </div>
      </div> <p></p></li>
     <li><span>Click <span class="uicontrol"><b>OK</b></span>.</span></li>
    </ol>
   </div>
  </div>
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   <div class="familylinks">
    <div class="parentlink">
     <strong>Parent topic:</strong> <a href="en-us_topic_0000001839223037.html">Restoration</a>
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